Advanced search
1 file | 7.88 MB

The leafy gall syndrome induced by Rhodococcus fascians

Elisabeth Stes (UGent) , Isolde Francis (UGent) , Ine Pertry (UGent) , Alicja Dolzblasz, Stephen Depuydt (UGent) and Danny Vereecke (UGent)
(2013) FEMS MICROBIOLOGY LETTERS. 342(2). p.187-194
Author
Organization
Abstract
The Actinomycete Rhodococcus fascians causes the leafy gall syndrome, an infectious plant disease that affects a wide range of plants, primarily dicotyledonous herbs. The syndrome is associated with delayed senescence, loss of apical dominance, activation of dormant axillary meristems, and formation of multiple inflorescences, leading to a stunted and bushy plant appearance. A major breakthrough in the elucidation of the virulence strategy of this pathogen was the discovery of a linear virulence plasmid, pFiD188 for R.fascians strain D188. Upon perception of a compatible host plant, an autoregulatory mechanism mediated by the att operon directs a switch in the bacterial life style from a harmless epiphyte into a pathogenic endophyte and, concomitantly, activates gene expression of the fas operon that encodes a cytokinin biosynthesis pathway. A mixture of five cytokinins determines the cytokinin activity of R.fascians that directly affects plant responses and development. Moreover, the bacterial cytokinins stimulate the host to produce auxins and polyamines, that function as accessory signals to aid in symptom development. The plant reacts against the developmental hijacking by R.fascians by activating a set of counteracting measures that ultimately results in a delicate balance, allowing a long-lasting biotrophic interaction.
Keywords
auxin, autoregulation, actinomycete, phytopathogen, cytokinin, hyperplasia, AGROBACTERIUM-TUMEFACIENS, CORYNEBACTERIUM FASCIANS, SECONDARY METABOLITES, SYMPTOM DEVELOPMENT, SIGNAL INTEGRATION, PLANT DEVELOPMENT, TOBACCO PLANTS, CYTOKININ, VIRULENCE, BACTERIAL

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 7.88 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Stes, Elisabeth, Isolde Francis, Ine Pertry, Alicja Dolzblasz, Stephen Depuydt, and Danny Vereecke. 2013. “The Leafy Gall Syndrome Induced by Rhodococcus Fascians.” Fems Microbiology Letters 342 (2): 187–194.
APA
Stes, E., Francis, I., Pertry, I., Dolzblasz, A., Depuydt, S., & Vereecke, D. (2013). The leafy gall syndrome induced by Rhodococcus fascians. FEMS MICROBIOLOGY LETTERS, 342(2), 187–194.
Vancouver
1.
Stes E, Francis I, Pertry I, Dolzblasz A, Depuydt S, Vereecke D. The leafy gall syndrome induced by Rhodococcus fascians. FEMS MICROBIOLOGY LETTERS. 2013;342(2):187–94.
MLA
Stes, Elisabeth, Isolde Francis, Ine Pertry, et al. “The Leafy Gall Syndrome Induced by Rhodococcus Fascians.” FEMS MICROBIOLOGY LETTERS 342.2 (2013): 187–194. Print.
@article{4259444,
  abstract     = {The Actinomycete Rhodococcus fascians causes the leafy gall syndrome, an infectious plant disease that affects a wide range of plants, primarily dicotyledonous herbs. The syndrome is associated with delayed senescence, loss of apical dominance, activation of dormant axillary meristems, and formation of multiple inflorescences, leading to a stunted and bushy plant appearance. A major breakthrough in the elucidation of the virulence strategy of this pathogen was the discovery of a linear virulence plasmid, pFiD188 for R.fascians strain D188. Upon perception of a compatible host plant, an autoregulatory mechanism mediated by the att operon directs a switch in the bacterial life style from a harmless epiphyte into a pathogenic endophyte and, concomitantly, activates gene expression of the fas operon that encodes a cytokinin biosynthesis pathway. A mixture of five cytokinins determines the cytokinin activity of R.fascians that directly affects plant responses and development. Moreover, the bacterial cytokinins stimulate the host to produce auxins and polyamines, that function as accessory signals to aid in symptom development. The plant reacts against the developmental hijacking by R.fascians by activating a set of counteracting measures that ultimately results in a delicate balance, allowing a long-lasting biotrophic interaction.},
  author       = {Stes, Elisabeth and Francis, Isolde and Pertry, Ine and Dolzblasz, Alicja and Depuydt, Stephen and Vereecke, Danny},
  issn         = {0378-1097},
  journal      = {FEMS MICROBIOLOGY LETTERS},
  keyword      = {auxin,autoregulation,actinomycete,phytopathogen,cytokinin,hyperplasia,AGROBACTERIUM-TUMEFACIENS,CORYNEBACTERIUM FASCIANS,SECONDARY METABOLITES,SYMPTOM DEVELOPMENT,SIGNAL INTEGRATION,PLANT DEVELOPMENT,TOBACCO PLANTS,CYTOKININ,VIRULENCE,BACTERIAL},
  language     = {eng},
  number       = {2},
  pages        = {187--194},
  title        = {The leafy gall syndrome induced by Rhodococcus fascians},
  url          = {http://dx.doi.org/10.1111/1574-6968.12119},
  volume       = {342},
  year         = {2013},
}

Altmetric
View in Altmetric
Web of Science
Times cited: